/* 优点:生成速度快
 * 1000 ->   22ms
 * 10000 ->  220ms
 * 100000 -> 2066ms
 */
const uuidv4 = () => {
  return ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, (c) =>
    (
      c ^
      (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (c / 4)))
    ).toString(16)
  );
};

export { uuidv4 };
